Solar System's Grandest Canyon (Valles Marineris) – Quick Facts about Mars
Mariner Valley is one of the most noticeable formations on the surface of Mars.
This system of canyons stretches for over 4,000 kilometers in length and has the title of the largest canyon in the Solar system.
Other great facts to know about Mars: • Planet Mars: 7 Interesting facts and Myste...
Make sure to find out about:
Mars One space research mission;
the peculiarities of Martian atmosphere.